Originally Posted by Ray S
Originally Posted by moparx
i ran a 14lb cap on the original radiator in my charger. had no problems with doing that.
if your system is in good condition, i see no reason you would have any problems with a 16lb cap.
for a long time, 7lb caps were what everyone recommended. and every time you parked, the car seemed to puke.
my recommendation is to hide a good recovery tank somewhere, run a 16lb cap, and enjoy the benefits of a closed system while looking factory stock.
just my opinion. your mileage will vary.
beer

It does gurgle after climbing a mountain and shutting down, even after idling to cool down.
I already have a tank hooked up - I'll try a pressure test soon. The 72 radiator and hoses are the same part # so it seems it would be fine.
Odd that they use a 16psi once a reservoir was added - seems backwards.

I've typically run 16lb caps on most of the 60-70's vehicles unless they had an aluminum radiator. Some of the MFR's of them say 6-7lbs max. Likely due to non ribbed tanks wink

www.tandmautomotive-omaha.com